digital.wwnorton.conm Chapter One Folder-BLC. 418 Digital Resources for Worlds T
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digital.wwnorton.conm Chapter One Folder-BLC. 418 Digital Resources for Worlds T Norton InQuizitive mpleted this question. onal response is required. Page b they differ hat are the various creation narratives in this chapter, in addition to that of human evolution? Expla Match each question with the type of analysis scientists might use to answer it. Drag each item on the left to its matching item on the right. radiocarbon dating At present, there is no definitive way of answering this question. I've found some stone tools embedded in volcanic sediment. When were these objects covered by volcanic ash? I've located a cave filled with paintings of animals and hunters-though no human remains. Was the artist definitely a man, or might the painter have been a woman? I've found a ceramic jar full of millet. When was the millet harvested? DNA analysis I've located a burial site with the well- preserved remains of several humans. Were the early humans at this site all related to one another? potassium-argon datingExplanation / Answer
1. The stone tools are embedded in a volcanic sediment. When were these objects covered by volcanic ash?
Ans.) Potassium-Argon dating to the right is the method to date the volcanic ash. In Potassium-Argon (K-Ar) dating, Potassium (40K) decays to Argon (40Ar). Argon is a gas and so it can easily and almost completely escape during volcanism but after the formation of ash in which Sanidine, a high temperature feldspar, is present which can retain argon (which escaped earlier) very efficiently later in its crystal structure. The Potassium in the crystal structure of feldspars in volcanic ash can break down to form argon again. This results in the accumulation of argon which only formed by decay. As we know the decayed argon gas can only be used for dating, so the accumulated argon gas in the ash can now be used to determine the age of volcanic ash.
2. I've found a ceramic jar full of millet. When was the millert harvested?
Ans.) One of the element constituting Millet (a cereal) is Carbo. Radioarbon dating in the right column have to be used as C-14 isotope contained within the millet can give the age of the harvesting of millet.
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